Katy Perry and John Mayer Call it Quits

They're hot and they're cold…and they're over again

So it's been kind of a crazy week for Katy Perry, who tweeted that she helped deliver a baby in a living room (!) yesterday. And just before she played nurse, news broke that she and John Mayer called it quits. The couple has been hot and cold ever since they got together in the summer of 2012, and now it looks like they've split…yet again. Who had February for the next breakup?

Sources close to the couple told E! News yesterday that they're off again, although it's not clear why. Right before the breakup, rumors started circulating that the singers were engaged. Maybe the pressure was getting to them? Or maybe John wasn't too pleased about Katy's recent liplock with Miley. (Seriously, it's been quite a week.)